Electrical switch.



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' lill EDWARD Il'. TOMLNSON, O'F NEWARK, AND SAMUEL C. MGKEOWN, OF EAST ORANGE, NEW JERSEY, ASSIGNORS TO SPLITDORF ELECTRICAL CO'MPAITY, OF NEWARK,

NEW JERSEY.

ELECTRICAL .sw'rron Specification of Letters Patent.

llatented May 6, 1919.

, is particularly adaptable for use in connection with an ignition system, and as shown and described the switch is specially adapted for tliecontrol of a high tension magneto, but it is to be understood that the switch is applicable for use inother electrical circuits.

The object of the invention is to provide a switch that is mechanically strong, posi- 1 tive and efficient in. its operation, and relatitl lill

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tively cheap to manufacture.

@ther and further objects will be apparent after a. study of the specification and drawing att-ached thereto.

ln the drawing, Figure 1 is a plan view of the switch with the operating handle and cover removed, the switch member being in one position `of operatori.

Fig. 2 is a view similar to Fig. 1 but with the switch member in another position of operation.

Fig. 3 is a sectional view, on the line 38 of Fig. 1 through the base member carrying the switch vparts but with the switch parts shown in full.

Fig. l is a front view of the cover plate and handleinposition and with the screws shown therein. for attaching the cover plate to the base member.

Fig. is a rear view oi Fig. 2 without the fastening screws.

, Referring now to the details, in which like numbers refer to corresponding parts in the various views. 1 is aeeup shaped base member having a flange 2 with threaded holes 8 therein. llastened to the bottom of the cup are contact studs 4 and 5. Stud 4 'as shown is insulated from the member l, butthe stud 5 being used in the illustration as a groundiiig stud is not insulated from the base member. shaped member 1 is a U-shaped member 6 having arms 7 and 8. The bottom arm has a hole 'through which passes ,a pivotal means Mounted within the cupsuch as a screw 9, saine bein fastened to the bottom of the member lyja nut 10. After the nut 10 is put on the end of the screw, the screw may be riveted over to prevent the nut from coming olf.- The upper arm 8 has a hole 11 and a slot 12 eX tending lengthwise of the arm 8. The crossbai' 18 of the U-sliaped member 6 has an eye 14 punched downwardly to receive one end of a. spring 15, the other end of which is hooked iiito an eye 16 punched inwardly froinithe side wall of the cup-shaped member. Extending from the cross-bar 13 is a tongue 17 adapted to engage the switch blades 18 carried b v the Contact stud 1. A cover plate 19 is adapted to be fastened to the flange 2 by means of special screw studs 20 and a screw 21. The entire switch is i adapted to be mounted by screw holes 28 through the cover 19. Studs 20 besides serving to hold. the cover plate to the ange 2 are' utilized for stops for the handle 22 which has a stud 23 adapted to project through the cover plate .1.9-,to an exetent sufficient to allow it to enter the hole 1l in the upper arm 8 of the U-shaped member 6. Stud 23 'carried aii ear 211 adapted to enter the slot 12 at the same time that the stud 28 enters the hole 11. A slot 25 is made in the cover plate to allow the ear 24 to pass through and as the. stud 28 is turned by means of the handle 22 the ear 24 moves in the note-hed portion 26 of the hub 27 on the inner part of the plate 19.V As soon as the ear 24 passes out of line of the Slot 25 it will be seen that the hanldle 22 cannot be removed from the switch, that is to-say, the handle 22 can only be removed from the switch in the off position.

ln the operation of the switch after the handle has been inserted as above described,

the` turningof the handle causes the ll-shaped member 6 to move say from the Aposition shown in Fig. 2 toward the position gli .lo

operated, that is by a push on the side of the handle, the U-shaped member will function as above described.

In the control of a high tension magneto, the usual practice is to short circuit the circuit breaker by a switch or what is the same thing, to ground the free end of the primary winding which is accomplished by the above described switch by connecting the free end ot the primary winding'to the stud -1 `and connecting' the ground to the stud 5, it being understood that the llshaped member 6 is grounded through its pivotal mounting means to the base member' l. lt will be readily observed that the switch ma;Y be

'adapted tor use in a battery ignition tem or in other electrical circuits and l. do not Wish to be limited to any particular application.

Irlaving' thus described our invention what we claim is l. ln e device of the 'character described,.

the combination of a cup-shaped base member having contact studs `fastened thereto, one of said studs having contact blades mounted thereon,` a U-shaped member pivotalllv mounted on said base member and having; aprojectmg tongue adapted to engage with said contact blades, a spring having one end attached to the side wall of the base member and the`other end attached to the cross-bar of thel 'tj-shaped member and adapted to move the Ushaped niember quickly to on or olf position Vafter it has been moved beyond a dead center' and to hold it in either position, a cover plate for the base member and a handle having a part adapted to pass through said plate and to engage the U- sbaped member to move the same from on or oposition by the dead center position, as described. y I

if. ln a device of tbe character described, the coi'nbination of a cup-shaped member having` arreyeplinclied from its side wall and having Contact studs fastened to the bot; tom thereof, oieo said studs being insulated from said member and carrying contactbladcs, aLl-shaped member' pivotall'vmounted on the bottom of said cup member and having a projecting tongue adapted to engage said contact blades and an eve punched from its cross-bar adjacent to said tongue, said eye in the cup member beingr located so as to bc in lino with the cve on thel U-shaped member and its pivot when the U member is substantially half Wa)v between said contact studs, a spring' connected between said eyes to move the U member to on or ott position and to hold it there after it has been moved by the pivot centerline, a cover for closing' the top of the .cup member and for mounting the switch, a handle havinga part adapted to pass through the cover Vtor engagement with the tl-shapcd member 'for movingn the same Yfrom on or oit position by the pivotal centerline and n'ieausy cooperating between the over and handle lo prevent its removal except in oil position. 3. In a device of the character describe-rl, the combination ot :i cup-sliaped member having a thing-re, a, cover plate with means' for fastchingy the same to the said flange` i handle having` a part adapted to pass through the cover plate onl)v iu one position of' the handle, a part of said means for taslcninfl the cover plate to the said flange being' used also as stops for thc arcuate movementl ot said handle, a tl-sliaped switch member rola,- tablY mounted on the bottom of l he cup mem-- ber and adapted to be engaged by that part of the handle extending through the cover plate into the cup member and a spring acting' on said U-shaiired member to help move and to positively hold it and the handle in either an ofi or on po'ition.

et. l'n a device of the class descrilwd, the combination of a cuirshaped member having a cover plate fastened thereto, a U-shapod switch member having' a hole in each arm ot" the U; pivoting' means passing through one of said holes tor rotat: bl;v fastening; the said switch member to the base of the cup member, the other ot said holes having :L slot extending along the arm, a. handle having a stud with a projecting' ear adapted to pass through said cover plate to an extent such that Athe stud enters the hole in the upper U arm and the ear engages the said slot where bv moven'ient ot the handle n'iovcs the U- sbapod member into on i or off i position. 5. Tn a device ot the class described, the combination ol a cup-shaped mcn'iber lmvinp; a cover plate fastened thereto, a U-shaprd switch member ha ving' a hole in each arm oi" the li, pivotii; means passing` through one ot said holes vlor rotatabbv fasteniiml the said switch member to the base ot the cup member. the other oi" said holes having :i slot ex'- 'tcndii'ig' along thc arm, an c vc in the wall of the cup-shaped member, an eve in the cross bar of the tl member and u spring' held by said eyes. a handle havingF n, stud with a projectingiP ear adapted to pas through said cover plate to an extent such that the stud enters the hole in the upper U arm and the 'car engages the said slot wbercb)v movement of' the handle moves the U-shapcd member to a, position whereth-e said springP will move the U member the remainder ol its distant-c and hold said U member in said position.

ln witness whereofr` we atix our signatures.

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